Although the enhancement of the intrathecal spinal nerve roots is not specific to Guillain-Barré syndrome and can be seen in neoplasia and other inflammatory processes, the enhancement of only the anterior spinal nerve roots is strongly suggestive of Guillain-Barré syndrome.

We experienced a case of surgically proven hepatic angiomyolipoma, a rare primary benign lipomatous tumor, which was preoperatively diagnosed by defining of its characteristic histologic components and benign radiologic nature with various imaging modalities. It was the first case that full radiologic evaluation was taken and internal vascular proliferation was defined by using dynamic bolus computed tomography (CT) prior to angiography.

KiWhangKim1Jae-ChunChang3 Byung-JuneJo1 Tae-HoonKim1 JongTaeLee2 HyungSikYoo2 OBJECTIVE. Our purposewas to investigatea correlationbetweenthe speedof contrast enhancement in patientswith hepaticcavernoushemangiomarevealedby dynamicMR imag ing and the internal echo pattern revealed by sonography.MATERIALS AND METHODS. Forty-five patients underwent multiphase IV con trast-enhanced dynamic MR imaging that revealed7 1 hepaticcavernoushemangiomasless than 4 cm in diameter; the MR findingswere comparedwith the sonographicfindings in these patients.On MR imaging, the hemangiomaswere classifiedas rapid-, intermediate-, and slow-enhancing. We classified sonographic features as hypoechoic, iso-or mixed echoic, and hyperechoic according to the relative echogenicity seen between lesions and the surrounding hepatic parenchyma. Sonographic patterns and MR imaging findings of in dividual lesions were then compared.RESULTS. Rapid-enhancinghemangiomasrevealedon dynamic MR imaging tendedto be hypoechoic on sonography (18/24, 75%; p = .0143), and lesions that were slow-enhancing on MR imaging tended to be hyperechoic (26/29, 90%; p < .0001). Hypoechoic lesions on sonography tended to be rapid-enhancing on dynamic MR imaging (18/18, 100%). Likewise, hyperechoic lesions on sonography tended to be slow-enhancing on MR imaging (26/33, 79%; p = .0009). CONCLUSION.In mostpatientswith hepaticcavernoushemangiomas, we found that the speedof contrast enhancementon multiphase dynamic MR imaging enabled us to predict the echo pattern in sonography and vice versa.

HAIC using high-dose 5-FU plus cisplatin achieved a good tumor response. Adding IFN-alpha did not show any additional beneficial effects in terms of tumor response rate or survival.

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